Seeing double on CNN's "Situation Room" on Wednesday night? Anchor Suzanne Malveaux interviewed her twin Suzette on the show about the Elena Kagan confirmation hearings. The older sister (by six minutes) is a legal analyst and associate law professor at Catholic University.

Is that allowed? The anchor told us that her producer came up with the idea for their first joint on-air appearance. "It's a new thing for us," said Suzanne, who promised her boss they wouldn't wear the same outfit. (Suzanne wore a black dress; Suzette, in a red top and brown jacket, was the twin with curly hair.)

The interview was full of standard wonk talk ..... until the last few seconds.

"If you want to fill in for me tomorrow here on the 'Situation Room' -- if you're available -- do you think anybody will notice the difference?" asked Suzanne.